噴射式 桁網의 開發에 관한 硏究 - Ⅰ

• 영문명: Development of Hydraulic Jet Dredge - I
• 발행기관: 군산대학교 수산과학연구소
• 저자명: 조봉곤(Bong-Kon CHO) 고관서(Kwan-Soh KO)
• 간행물 정보: 『군산대학교 수산과학연구소 연구논문집』제2집, 171~181쪽, 전체 11쪽
• 주제분류: 농수해양 > 해양학
• 파일형태: PDF
• 발행일자: 1994.12.02

영문 초록

In order to find the excavating performance of water-jet nozzle on the sand, the authors were carried out the excavating experiment with the model nozzles which were semi circular sectioned nozzles and rectanglar nozzle in water tank. The results were as follows. 1) Excavating maximum depth and width on the sand by the water jet were straightly increased in proportion to the velocity of water jet and the section area of nozzle, and that, by the nozzle distance from the excavating point on the sand, the depth was decreased, while the width was increased straightly. 2) Rectangular nozzle which the thick of hole is Imm, was a little bit better than the circular nozzle of the same sectioned area on the excavating performance. 3) Empirical equations between the velocity of water jet, the distance of nozzle, and the maximum excavating depth and width by angle of nozzle were expressed as linear, they were as follows on the 45' angle of the rectangular nozzle(1 x 12mm); D=0.0093V0 - 0.23H + 5.7 W=O.0147V0 + 1.06H + 10.2 where, D is the maximum excavating depth(cm), W is the maximum excavation width(cm), V0 is the velocity ot water jet(cm/s); 926≤ VO≤1504, H is the distance(cm) from nozzle tip to waterjetted point on the surface of sand.

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